An operation method of a first communication node includes generating a plurality of modulation symbols for information bits; determining a symbol mapping pattern based on a number Nt of antennas of the first communication node, a number NL of spatial layers multiplexed in a same frequency resource, and a number NSSF of modulation symbols belonging to one space-frequency grid; mapping the plurality of modulation symbols to a space-frequency domain based on the symbol mapping pattern; and transmitting the plurality of modulation symbols mapped to the space-frequency domain to a second communication node using the antennas.
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2. The operation method according to claim 1, wherein the plurality of modulation symbols are symbols in a vector form, which are converted by serial-to-parallel conversion.
5. The operation method according to claim 1, wherein one or more space-frequency grids exist in the space-frequency domain, a number of spatial resources in the one space-frequency grid is Nt, a number of frequency resources in the one space-frequency grid is NSSF/NL, and a symbol mapping pattern is same in the NSSF/NL frequency resources of the one space-frequency grid.
6. The operation method according to claim 1, further comprising transmitting, to the second communication node, a message including one or more of Nt, NL, and NSSF.
9. The first communication node according to claim 8, wherein the plurality of modulation symbols are symbols in a vector form, which are converted by serial-to-parallel conversion.
12. The first communication node according to claim 8, wherein one or more space-frequency grids exist in the space-frequency domain, a number of spatial resources in the one space-frequency grid is Nt, a number of frequency resources in the one space-frequency grid is NSSF/NL, and a symbol mapping pattern is same in the NSSF/NL frequency resources of the one space-frequency grid.
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December 2, 2020
January 31, 2023
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